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Other Current Liabilities (Detail) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Other Liabilities Disclosure [Abstract]    
Customer incentives $ 6,256 $ 3,766
Accrued interest 1,586 227
Other 1,219 1,006
Total other current liabilities $ 9,061 $ 4,999